Exercise mat holder



FIG. 1 is a perspective drawing showing an exercise mat supported from several of my new exercise mat holders and wherein the matter shown in dashed line comprises no part of my invention;

FIG. 2 show a front view of my design for an exercise mat holder;

FIG. 3 shows a top view thereof;

FIG. 4 shows a bottom view thereof; and,

FIG. 5 shows a right side view thereof and wherein the left side view is identical. 

The ornamental design for an exercise mat holder, as shown and described. 